Electromagnetic trigger switch

Electricity: magnetically operated switches – magnets – and electr – Electromagnetically actuated switches – Latching means

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Details

335165, 335186, 307142, 361194, H01H 920, H01H 4500

Patent

active

044019580

ABSTRACT:
Apparatus is disclosed for controlling the operation of electrically operated equipment, such as power tools and the like. The apparatus includes circuit connectors, including first and second spaced terminals, in which the first terminal is connected to a source of electricity and the second terminal is connected to the equipment itself so that electricity can be supplied to the equipment by electrically connecting the spaced terminals. The apparatus also includes a switch including a conductor and movable between a first position in which the conductor is not in electrical contact with the spaced terminals and a second position in which the conductor is in electrical contact with the spaced terminals, a locking bar movable between a first position in which the switch is retained in its second position, and a second position in which the locking bar does not interfere with movement of the switch, the locking bar being metallic and therefore being capable of being held in position under the influence of a magnetic field, and an electromagnet for retaining the locking bar in its first position upon activation of the electromagnet.

REFERENCES:
patent: 3229109 (1966-01-01), Wilson
patent: 3893054 (1975-07-01), Marcoux et al.
patent: 3925742 (1975-12-01), Muench
patent: 4181907 (1980-01-01), Esposito et al.

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